Clears the cache held by get_theme_roots() and WP_Theme.

This was once used to create a thumbnail from an Image given a maximum side size.

Enqueues all scripts, styles, settings, and templates necessary to use all media JS APIs.

Returns a WP_Image_Editor instance and loads file into it.

Retrieve list of mime types and file extensions.

Returns a list from WordPress.org of popular importer plugins.

Retrieve a single post, based on post ID.

Tests whether there is an editor that supports a given mime type or methods.

Test if a given path is a stream URL

Returns an array of allowed HTML tags and attributes for a given context.